package com.itheima.reggie.controller;

import com.itheima.reggie.common.R;
import lombok.extern.slf4j.Slf4j;
import org.apache.catalina.connector.CoyoteOutputStream;
import org.apache.commons.io.IOUtils;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.UUID;

@RestController
@RequestMapping("/common")
@Slf4j
public class CommonController {

    @Value("${reggie.path}")
    private String basePath;


    @PostMapping("/upload")
    public R<String> upload(MultipartFile file)
    {
        String originalFilename = file.getOriginalFilename();
        String substring = originalFilename.substring(originalFilename.lastIndexOf("."));

        String fileName = UUID.randomUUID().toString() + substring;

        File dir=new File(basePath);
        if(!dir.exists())
        {
            dir.mkdirs();
        }

        try {
            file.transferTo(new File(basePath+fileName));
        } catch (IOException e) {
            e.printStackTrace();
        }

        return R.success(fileName);


    }

    //文件下载
    //
    @GetMapping("/download")
   public void download(String name,HttpServletResponse response)
   {
       try {
           FileInputStream fis=new FileInputStream(new File(basePath+name));
           ServletOutputStream sos = response.getOutputStream();

           IOUtils.copy(fis,sos);
           fis.close();
           sos.close();
       } catch (Exception e) {
           e.printStackTrace();
       }
   }





}
